Anti-freezing device for water-pipes



(No Model.)

W. G. BROWNEL- I "ANTI FREEZING DEVICE PORWATBR PIPES. V No 382.588. Patented May 8 1888.

'WYIQTNESSES: I I I IWV'EJV'ZV'OREQI M I WValIzar G-QBrmwnai 7 .amine v f N. PEIERS. rmoum imr, Wuhlngtun. n1;

UNITE STATES- PATE T "OFFICE.

WALKER o. BROWNE, or ATLANTA, GEORGIA, ASSIGNOR To THE UNITED STATES AUTOMATIC WATER'OUT-OFF COMPANY, on GEORGIA.

ANTI-FREEZING DEVICE FOR WATER-PIPES.

SPECIFICATION forming part of Letters Patent No. 382,588, dated May 8, 1888.

Application filed March 15, 1887.

To all whom it may concern:

Be it known that I, WALKER G. BROWNE,

a citizen of the United States, residing at Atof like general character, compound plates for actuating the valve, and an adjusting-screw to cause the valve to open or close at any given temperature.

The details of construction and the mode of operation will be hereinafter fully set forth. In the accompanying drawings, Figure 1 is an end view of the pipe showing the outside of the valve and compound plates, ad-

2 5 justing-screw, and the pivot by which the fixed end of the compound plate is hinged to the valve-casing, and the pivot by which the free end is hinged to the rod or stem of the valve. Fig. 2 is a horizontal section through the center of the pipe, Fig. 1, showing the waterpassages, the valves and valveseats, and the general construction of the valve-cook. Fig. 3 is a vertical section through the center of the pipe, Fig. 1, showing several of the details.

In the figures, like reference-marks referring to corresponding parts in the several views, A is a water-supply pipe on which is avalvecock consisting of a shell or casing, B, in which are the water-passages b and b, and the valveseats 0 and O,having ports 0 and c, and the puppet-valveI) and D, having the stem d, and

actuated by the stem (1, by which it is also guided, as well as by the guiding-arms d. In the construction of this valve it is preferable to form. the valve-seats in a hollow plug, E, the seat 0 being made integrally with it and the seat 0 being inserted. The plug F, being inserted to close the aperture in the outer end of the plug E, forms a guide for the actuating-valvestem. Around this stem and in the plug F may be placed packing in cases when the Serial No. 231,040. (No model.)

water-pressure requires it. h In the 'plug E is an aperture, on one of its sides coincidental with the pipe and opening from the pipe into the space between the valves, as shown in Figs. 2 and 3, and opening out from the plug is an aperture, as shown in Fig. 1, thatis ooincidental with the water-passage b. The water passing throughthis valve-coclgcoming in the direction indicated by the-arrow, Fig. 1, and

the valves being open,will pass partly through the port 0 in the valve-seat O and through the passage 1), and partly through the port 0' in the valve-seat O and the passage 1), into .the

-continuation of the pipe A.

The valves 0 and O and their portsc and 0' 7 should be of such relative sizes as to cause the pressure of the water to be slightly greater on the valve 0 than on the valve 0, in order to make these valves self-closin g whenever they shall come nearly into that position, for reasons that will be hereinafter given.

On one side of the valve-casing is the'lug G, Figs. 1 and 2, (but best shown in Fig. 1,) to.

which is'hinged by thetpin 9 one end of the compound plates that are composed of two metals having different contracting and expanding properties when exposed to varying temperatures, andto the other or free end :is hinged the valve-stem d.- In the construction shown the strips marked 3 are much more affected by the change of temperature than those marked or. WVhen the temperaturelowers, the

first compound plate will bend or how in the Y direction indicated by the arrow marked 1.,

The last plate will bend or how in an opposite direction, indicated bythe arrow 2. As

the first compound plate is fixed, the last must do all the moving, and that in the direction of the arrow Z. The tops of the compound plates are fixed nearly parallel with the sides of the U-shaped spring S. As the temperature lowers, the two inner compound plates will form an ellipse, thereby throwing or spreading out the ends of the spring S. As the angle which the sides of this spring makes grows greater, so will the angle or distance between the first andlast plates become greater, thus adding an additional force to the'two outside plates.

This device may be used for various purposes. In the construction shown the valve will open on the lowering of the temperature and allow the water to flow, thus preventing freezing, and as the'temperature again rises the valve will be closed. This arrangementmight also be used in case of accidental fires, the heat causing the valve to open and the water to flow.

Of course in all the above cases the free end of the compound plates must be adjusted at a proper distance from the fixed end, the preferred way of doing which is by an adjustingscrew, H, Fig. 1, the ends of the central plates being united by a U shaped elastic metal strip, S, or other hinge, the plates being otherwise rigidly fastened.

The valves 0 and c are nearly balanced, for the reason that, having considerable length in proportion to their thickness, the compound plates will be somewhat elastic and will be only able to start the valves open against a slight pressure, aflter which, having acquired some tension by the unequal expansion before starting the valves, and the resistingpressure of the water being mostly removed by the starting of the valves, the accumulated tension of the compound plates will open them sufficiently to allow the water to flow freely. When the unequal expansion ofthe compound plates closes the valves, it will be bybringing the valves to the position in which the water C C, so arranged as to allow the pressure of 0 the water to help open them after being started by the compound plates, the guide d, the valve-shell, and the-lug G.

In testimonywhereof I afiix mysignature in presence of two Witnesses.

WALKER G. .BROWNE.

\Vitnesses:

MAX BAYERSDORFER, VALENTINE HATCH. 

